"an"的搜索结果

this bird was captured within a net and will later be tested in an arbovirus study

标签: this,bird,was,captured,within, 浏览: 2

stearman bi plane is spraying an insecticide during malaria control operations in savannah ga

标签: stearman,bi,plane,is,spraying, 浏览: 2

st rochs cemetery new orleans la which acted as an urban situated breeding site for aedes aegypti

标签: st,rochs,cemetery,new,orleans, 浏览: 2

special pathogens branch scientist is performing an elisa test on suspected hantavirus samples

标签: special,pathogens,branch,scien 浏览: 2

rabbit was caught in a national trap and was later tested during an arbovirus study

标签: rabbit,was,caught,in,a,nationa 浏览: 2

public health scientist as he was drawing blood from an elderly woman to be tested

标签: public,health,scientist,as,he, 浏览: 2

photograph showed a public health professional consulting with an elderly woman during the swine flu

标签: photograph,showed,a,public,hea 浏览: 1

photograph showed a health professional as he was drawing blood from an elderly man for testing

标签: photograph,showed,a,health,pro 浏览: 2

peru hospital waiting room that had to be converted to an emergency cholera ward during an epidemic

标签: peru,hospital,waiting,room,tha 浏览: 1

military investigator with a flashlight as he was carrying out an inspection beneath a bridge

标签: military,investigator,with,a,f 浏览: 2

bangladesh man filling out an information gathering questionnaire pertaining to his knowledge

标签: bangladesh,man,filling,out,an, 浏览: 1

bamboo constructed bridge used as an integral tool in daily bangladesh village life

标签: bamboo,constructed,bridge,used 浏览: 2

technicians that were loading a mobile quarantine facility into an aircraft

标签: technicians,that,were,loading, 浏览: 2

several loadmasters as they were loading mobile quarantine facility into an aircraft

标签: several,loadmasters,as,they,we 浏览: 2

conducting an investigation in order to determine if a spider had any trace of the marburg virus

标签: conducting,an,investigation,in 浏览: 2